StrN SerStr - Hint SERSTR! - I do not understand

[Mapo]

Hi all,
in a project I have to pass data from a word variable to a string variable. (the data is number)
I use this line, which works, but it gives me a warning

Dim SerStr[4] As Byte
Dim Temp1 As Word

StrN SerStr = Str$(Dec4 Temp1)

Is there a correct way to do this data exchange?

[trastikata]

Dim SerStr As String * 4
Dim Temp1 As Word

SerStr = Str$(Dec4 Temp1)

[Mapo]

I lost a lot of time without understanding
Thank you trastikata